JP4043969B2 - Reservoir union of hydraulic master cylinder for vehicles - Google Patents

Reservoir union of hydraulic master cylinder for vehicles Download PDF

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Publication number
JP4043969B2
JP4043969B2 JP2003034604A JP2003034604A JP4043969B2 JP 4043969 B2 JP4043969 B2 JP 4043969B2 JP 2003034604 A JP2003034604 A JP 2003034604A JP 2003034604 A JP2003034604 A JP 2003034604A JP 4043969 B2 JP4043969 B2 JP 4043969B2
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reservoir
union
hydraulic fluid
master cylinder
hose
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JP2004243853A (en
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敦 金井
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Nissin Kogyo Co Ltd
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Nissin Kogyo Co Ltd
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Priority to JP2003034604A priority Critical patent/JP4043969B2/en
Priority to EP04003139A priority patent/EP1447294B1/en
Priority to DE200460024346 priority patent/DE602004024346D1/en
Priority to AU2004200569A priority patent/AU2004200569B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/22—Master control, e.g. master cylinders characterised by being integral with reservoir
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/26—Reservoirs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/06—Applications or arrangements of reservoirs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
    • B60T17/222—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems by filling or bleeding of hydraulic systems

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車等の走行車両のブレーキやクラッチを液圧で作動する液圧マスタシリンダと、作動液を貯留するリザーバとを連結するために用いられる車両用液圧マスタシリンダのリザーバユニオンに係り、詳しくは、作動液をマスタシリンダ内に良好に補給させることのできるリザーバユニオンに関する。
【０００２】
【従来の技術】
従来、車体への取り付けスペースの関係から、車体に取り付けたリザーバからホースを介してマスタシリンダに作動液を供給するようにしたものがある。このタイプのものでは、リザーバとマスタシリンダとの間に、リザーバにつながれたホースとマスタシリンダとを連結するリザーバユニオンが介装されている。
【０００３】
リザーバユニオンは、マスタシリンダのシリンダボディ上面から突出するユニオン連結用ボス部に嵌着されるボディ連結用管体を下側に、また、リザーバにつながれたホースを連結するホース連結用管体を上側に備えたもので、通常、これらボディ連結用管体とホース連結用管体とはＬ字状に形成される管状体で一体に形成されていた（例えば、特許文献１参照）。
【０００４】
【特許文献１】
実開昭５８−１５２４５２号公報（第１頁，第２図）
【０００５】
【発明が解決しようとする課題】
しかし、上述のものでは、ホースの内径やユニオン連結用ボス部の内径が予め設定された比較的細い径であるため、前記Ｌ字状の管状体の内径もこれに伴って比較的細いものであった。このため、ブレーキやクラッチ装置内の空気を排出しなから作動液の充填を行う際に、作動液の補給性が悪く充填作業に時間がかかっていた。
【０００６】
また、ホースが連結されるホース連結用管体は、リザーバタンクの車体への取り付け位置によって、角度が変化するため、リザーバユニオンは車種毎に形成しなければならず汎用性が低くコストがかかっていた。
【０００７】
そこで本発明は、簡単な構造で、空気を排出しなから作動液の充填を行う際に、作動液の補給性を向上させ、充填作業を短時間で行うことができるとともに、汎用性が高く、製造コストを低減させるとともに、樹脂で精度良く成形することのできるリザーバユニオンを提供することを目的としている。
【０００８】
【課題を解決するための手段】
上記の目的を達成するため、本発明は、リザーバユニオン本体の下側に、マスタシリンダのシリンダボディ上面から突出するユニオン連結用ボス部に嵌着するボディ連結用管体を突設し、前記リザーバユニオン本体の上側に、作動液を貯留するリザーバに接続したホースに連結するホース連結用管体を突設し、前記リザーバに貯留された作動液を前記マスタシリンダに供給する車両用液圧マスタシリンダのリザーバユニオンにおいて、前記リザーバユニオン本体を、樹脂製の下側分割体と樹脂製の上側分割体とを溶着して、前記ボディ連結用管体と前記ホース連結用管体とが連通する２つの作動液貯留室を、前記リザーバユニオン本体内に互いに独立して形成し、前記下側分割体には、前記シリンダボディから突出する一対の前記ユニオン連結用ボス部にそれぞれ嵌着する２つの前記ボディ連結用管体を、前記上側分割体には、作動液を貯留するリザーバに接続した一対の前記ホースにそれぞれ連結する２つの前記ホース連結用管体をそれぞれ備えるとともに、前記下側分割体と上側分割体のいずれか一方または双方に、前記両分割体を溶着した際に前記作動液貯留室を独立形成する凹部を設け、前記リザーバユニオン本体の２つの作動液貯留室間に橋桁部を設け、該橋桁部の中央リブの両側に肉抜き用の空隙部を形成し、前記中央リブを形成する一対の仕切壁上半部と一対の仕切壁下半部とによって前記中央リブに中空室を形成し、該中空室の底部に空気を抜き出す貫通孔を前記下側分割体に形成したことを特徴としている。
【００１０】
【発明の実施の形態】
以下、本発明の各形態例を図面に基づいて詳しく説明する。図１乃至図５は本発明の第１形態例を示すもので、リザーバユニオン１は、マスタシリンダ２のシリンダボディ２ａに形成されるユニオン連結用ボス部２ｂ，２ｂと、リザーバにつながれたホース（いずれも図示せず）とを連結するもので、マスタシリンダ２の内部には、リザーバからホース及びリザーバユニオン１を介して作動液が供給される。
【００１１】
マスタシリンダ２は、シリンダボディ２ａの内部に図示しない２つの液圧室を画成し、これら液圧室で昇圧した作動液を２つのブレーキ系統に個別に供給するタンデム型で、シリンダボディ２ａの上面前後部に前記ユニオン連結用ボス部２ｂ，２ｂが突設され、両ユニオン連結用ボス部２ｂ，２ｂの間に板状のユニオン連結用フランジ２ｃがシリンダ軸と平行に突設されている。ユニオン連結用ボス部２ｂ，２ｂのそれぞれは、内部に嵌合孔を有する円筒状に形成されており、嵌合孔とシリンダボディ２ａの内部とは、小径の連通孔によって連通している。
【００１２】
リザーバユニオン１は、樹脂で形成されるもので、上下幅を持たせた横長略小判型に形成され、内部を中空状としている。このリザーバユニオン１には、シリンダボディ２ａのユニオン連結用ボス部２ｂ，２ｂと嵌合するボディ連結用管体４，４が下側に突設され、また、リザーバにつながれたホースを連結するホース連結用管体５，５が、ボディ連結用管体４，４の位置に対応させて上側に突設され、前記ボディ連結用管体４，４の間にはシリンダボディ２ａのユニオン連結用フランジ２ｃと重ね合わされるボディ連結用フランジ６が突設されている。
【００１３】
リザーバユニオン１の内部に形成された中空部分には、一方のボディ連結用管体４及びホース連結用管体５とボディ連結用フランジ６との中間位置に、シリンダ軸と直交する一方の作動液貯留室用隔壁８が、また、他方のボディ連結用管体４及びホース連結用管体５とボディ連結用フランジ６との中間位置に、シリンダ軸と直交する他方の作動液貯留室用隔壁８がそれぞれ設けられる。これにより、一方の作動液貯留室用隔壁８とリザーバユニオン１の外周壁９とで、一方のボディ連結用管体４とホース連結用管体５とに連通する一方の作動液貯留室１０が画成され、他方の作動液貯留室用隔壁８と外周壁９とで、他方のボディ連結用管体４とホース連結用管体５とに連通する他方の作動液貯留室１０が画成される。
【００１４】
一方の作動液貯留室１０と他方の作動液貯留室１０との間に設けられる橋桁部１１のシリンダ軸方向には、中央リブ１２が設けられるとともに、該中央リブ１２と、外周壁９と、前記作動液貯留室用隔壁８，８とで仕切られた矩形の２つの空隙部１３，１３が上下方向に貫通形成されている。また、中央リブ１２内部に形成される中空室７の底部には、該中空室７に連通する貫通孔１４が穿設されている。
【００１５】
上述のように形成される本形態例のリザーバユニオン１は、樹脂製の下側分割体１ａと上側分割体１ｂとを溶着することによりリザーバユニオン本体１ｃが形成されるもので、下側分割体１ａで、リザーバユニオン本体１ｃの下部半体が構成され、上側分割体１ｂで、リザーバユニオン本体１ｃの上部半体が構成される。以下、リザーバユニオン本体１ｃの下側分割体１ａと上側分割体１ｂの構成について説明する。
【００１６】
下側分割体１ａは、横長略小判型に形成された底部ベース部１ｄの周囲に、先端に第１溶着用フランジ９ａを備えた外周壁下半部９ｂが立設され、底部ベース部１ｄの下面より、前記ボディ連結用管体４，４と、ボディ連結用フランジ６とが突設される。一方のボディ連結用管体４とボディ連結用フランジ６との中間位置と、他方のボディ連結用管体４とボディ連結用フランジ６との中間位置とには、底部ベース部１ｄより、前記作動液貯留室用隔壁８の下半部８ａ，８ａが突設され、下半部８ａ，８ａと外周壁下半部９ｂと底部ベース部１ｄとで、作動液貯留室１０，１０の下半分を構成する第１凹部１０ａ，１０ａが形成される。また、前記橋桁部１１を構成する底部ベース部１ｄには、空隙部１３，１３と中央リブ１２形成用の仕切壁下半部１２ａ，１２ａが前記作動液貯留室用隔壁８の下半部８ａ，８ａと直交して突設されて、中央リブ１２の底部を構成する底部ベース部１ｄには、前記貫通孔１４が穿設されている。
【００１７】
上側分割体１ｂは、横長略小判型に形成された天井ベース部１ｅの周囲に、先端に第２溶着用フランジ９ｃを備えた外周壁上半部９ｄが垂設されたもので、天井ベース部１ｅの上面より、前記ホース連結用管体５が突設される。上側分割体１ｂの、前記下側分割体１ａに形成された作動液貯留室用隔壁８の下半部８ａ，８ａと対応する位置には、天井ベース部１ｅより作動液貯留室用隔壁８の上半部８ｂ，８ｂが垂設され、上半部８ｂ，８ｂと外周壁上半部９ｄと天井ベース部１ｅとで、作動液貯留室１０の上半分を構成する第２凹部１０ｂ，１０ｂが形成される。また、前記橋桁部１１を構成する天井ベース部１ｅには、空隙部１３，１３が形成されるとともに、前記下側分割体１ａの仕切壁下半部１２ａ，１２ａに対応させて、仕切壁上半部１２ｂ，１２ｂが垂設されている。
【００１８】
上述の下側分割体１ａと上側分割体１ｂとは、第１溶着用フランジ９ａと第２溶着用フランジ９ｂ及び、作動液貯留室用隔壁８，８の下半部８ａ，８ａと上半部８ｂ，８ｂ及び、仕切壁上半部１２ａ，１２ａと仕切壁下半部１２ｂ，１２ｂとをそれぞれ溶着することによりリザーバユニオン本体１ｃが形成され、この溶着によりリザーバユニオン本体１ｃには、前記作動液貯留室１０，１０、空隙部１３，１３、中央リブ１２及び中空室７とが形成される。
【００１９】
このように形成されたリザーバユニオン１は、ユニオン連結用ボス部２ｂ，２ｂやホースの内径に応じて、ボディ連結用管体４，４やホース連結用管体５，５が比較的細い径に形成されるが、ボディ連結用管体４，４とホース連結用管体５，５との間には、作動液を溜める作動液貯留室１０，１０が形成されていることから、ブレーキやクラッチ装置内の空気を排出しながら作動液の充填を行う際に、作動液の補給性が向上し、短時間で充填作業を行うことができる。
【００２０】
また、リザーバユニオン本体１ｃを、樹脂で形成した下側分割体１ａと上側分割体１ｂとを溶着することによって形成するので、リザーバユニオン本体１ｃを安価に製造することができ、製造コストの低減化を図ることができる。さらに、中央リブ１２の底部を構成する底部ベース部１ｄには、貫通孔１４が穿設されていることから、下側分割体１ａと上側分割体１ｂとを付き合わせて溶着する際に、この貫通孔１４から内部の空気を抜くことができ、精度良く簡単に下側分割体１ａと上側分割体１ｂとを溶着させることができる。また、作動液貯留室１０，１０との間に形成される橋桁部１１に、空隙部１３，１３が設けられることにより、橋桁部１１が肉厚となることを防止でき、下側分割体１ａと上側分割体１ｂとを略均等な肉厚に形成することができるので、両分割体１ａ，１ｂを樹脂成形する際に、ひけが生じることがなく、下側分割体１ａと上側分割体１ｂとを精度良く成形することができる。
【００２７】
図６は、本発明の第２形態例を示すもので、本形態例のリザーバユニオン３０は、樹脂製の下側分割体３０ａと上側分割体３０ｂとを溶着してリザーバユニオン本体３０ｃを形成し、下側分割体３０ａ側に、作動液貯留室３１を形成する凹部が形成されている。下側分割体３０ａは底部ベース部３０ｄより、下方に一対のボディ連結用管体３２が突設され、上方に外周壁３３と作動液貯留室用隔壁とが突設され、該作動液貯留室用隔壁と外周壁３３と底部ベース部３０ｄとで作動液貯留室３１を形成する凹部が形成される。
【００２８】
上側分割体３０ｂは板状の天井ベース部３０ｅの上部に一対のホース連結用管体が突設されたもので、天井ベース部３０ｅを下側分割体３０ａに溶着することによって、作動液貯留室３１を形成する凹部の上部開口が上側分割体３０ｂで覆われ、リザーバユニオン本体３０ｃに、ボディ連結用管体とホース連結用管体とを連通する作動液貯留室３１が形成される。
【００２９】
図７は、本発明の第３形態例を示すもので、本形態例のリザーバユニオン４０は、樹脂製の下側分割体４０ａと上側分割体４０ｂとを溶着してリザーバユニオン本体４０ｃを形成し、上側分割体４０ａ側に、作動液貯留室４１を形成する凹部が形成されている。下側分割体４０ａは、板状の底部ベース部４０ｄの下方に一対のボディ連結用管体４２が突設されている。
【００３０】
上側分割体４０ｂは板状の天井ベース部４０ｅに一対のホース連結用管体が突設され、天井ベース部４０ｅの周囲より外周壁４３が垂設されるとともに、作動液貯留室用隔壁が垂設され、該作動液貯留室用隔壁と外周壁４３と天井ベース部４０ｅとで作動液貯留室４１を形成する凹部が形成される。このように形成された下側分割体４０ａと上側分割体４０ｂとを溶着すると、上部分割体４０ｂに形成された作動液貯留室４１を形成する凹部の下部開口が下側分割体４０ａで覆われ、リザーバユニオン本体４０ｃに、ボディ連結用管体４２とホース連結用管体とを連通する作動液貯留室４１が形成される。
【００３１】
なお、本発明のリザーバユニオンは、上述の各形態例のように、タンデム型のマスタシリンダに適用されるものに限らず、シングルタイプのマスタシリンダにも適用できる。
【００３２】
【発明の効果】
以上説明したように、本発明によれば、リザーバユニオンのボディ連結用管体と前記ホース連結用管体との間に、作動液を溜める作動液貯留室を設けたことにより、空気を排出しなから作動液の充填を行う際に、作動液の補給性を向上させ、充填作業を短時間で行うことができるようになる。
【００３３】
また、樹脂製の下側分割体と上側分割体とを溶着してリザーバユニオン本体を形成したので、リザーバユニオン本体を安価に形成することができる。
【００３４】
特に、タンデム型のマスタシリンダに適用されるものでは、リザーバユニオン本体の双方の作動液貯留室間に設けられる橋桁部に空隙部を形成し、前記橋桁部を肉抜きしたことにより、樹脂でリザーバユニオンの下側分割体と上側分割体とを成形する際に、樹脂の肉厚が略均等となり、ひけが生じる虞がなく、下側分割体と上側分割体とを精度良く成形することができる。また、前記橋桁部の中空室を形成する下側分割体に、前記橋桁部の中空室に連通する貫通孔を形成したことにより、前記上側分割体と下側分割体の溶着時に貫通孔から空気を抜くことができ、上側分割体と下側分割体とを簡単に、精度良く溶着することができる。
【図面の簡単な説明】
【図１】 本発明の第１形態例を示すリザーバユニオンの平面図
【図２】 図１のＩＩ−ＩＩ断面図
【図３】 図１のＩＩＩ−ＩＩＩ断面図
【図４】 図１のＩＶ−ＩＶ断面図
【図５】 本発明の第１形態例を示すリザーバユニオンをマスタシリンダに取り付けた状態を示す斜視図
【図６】 本発明の第２形態例を示すリザーバユニオンの要部断面側面図
【図７】 本発明の第３形態例を示すリザーバユニオンの要部断面側面図
１，３０，４０…リザーバユニオン、１ａ，３０ａ，４０ａ…下側分割体、１ｂ，３０ｂ，４０ｂ…上側分割体、１ｃ，３０ｃ，４０ｃ…リザーバユニオン本体、１ｄ，３０ｄ，４０ｄ…底部ベース部、１ｅ，３０ｅ，４０ｅ…天井ベース部、２…マスタシリンダ、２ｂ…ユニオン連結用ボス部、４，３２，４２…ボディ連結用管体、５…ホース連結用管体、６…ボディ連結用フランジ、７…中空室、８…作動液貯留室用隔壁、８ａ…下半部、８ｂ…上半部、９…外周壁、１０，３１，４１…作動液貯留室、１０ａ…第１凹部、１０ｂ…第２凹部、１１…橋桁部、１２…中央リブ、１３…空隙部、１４…貫通孔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reservoir union of a hydraulic master cylinder for a vehicle that is used to connect a hydraulic master cylinder that hydraulically operates a brake or clutch of a traveling vehicle such as an automobile and a reservoir that stores hydraulic fluid. Specifically, the present invention relates to a reservoir union that can satisfactorily replenish hydraulic fluid into a master cylinder.
[0002]
[Prior art]
Conventionally, there is one in which hydraulic fluid is supplied to a master cylinder from a reservoir attached to the vehicle body via a hose because of a mounting space on the vehicle body. In this type, a reservoir union for connecting a hose connected to the reservoir and the master cylinder is interposed between the reservoir and the master cylinder.
[0003]
The reservoir union has a body connecting tube fitted to the union connecting boss protruding from the upper surface of the cylinder body of the master cylinder on the lower side, and a hose connecting tube connecting the hose connected to the reservoir on the upper side. In general, the body connecting tube and the hose connecting tube are integrally formed of a tubular body formed in an L shape (see, for example, Patent Document 1).
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. 58-152452 (first page, FIG. 2)
[0005]
[Problems to be solved by the invention]
However, in the above, since the inner diameter of the hose and the inner diameter of the boss part for union connection are relatively thin diameters set in advance, the inner diameter of the L-shaped tubular body is also relatively thin. there were. For this reason, when filling the hydraulic fluid without discharging the air in the brake or clutch device, the replenishment of the hydraulic fluid is poor and the filling operation takes time.
[0006]
In addition, since the angle of the hose connection tube body to which the hose is connected varies depending on the position of the reservoir tank attached to the vehicle body, the reservoir union must be formed for each vehicle type, and is low in versatility and costly. It was.
[0007]
Therefore, the present invention has a simple structure, improves the replenishability of the working fluid when filling the working fluid without discharging the air, can perform the filling operation in a short time, and has high versatility. An object of the present invention is to provide a reservoir union that can be manufactured with high accuracy while reducing the manufacturing cost.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, there is provided a body connecting tube projecting from a lower surface of a reservoir union main body and fitted into a union connecting boss protruding from an upper surface of a cylinder body of a master cylinder. A vehicular hydraulic master cylinder for supplying a hydraulic fluid stored in the reservoir to the master cylinder by projecting a hose coupling tube connected to a hose connected to a reservoir for storing hydraulic fluid on the upper side of the union body In the reservoir union, the reservoir union main body is welded to the lower divided body made of resin and the upper divided body made of resin so that the body connecting tube body and the hose connecting tube body communicate with each other. the hydraulic fluid storage chamber, the reservoir union independently form each other in the body, wherein the lower split body, a pair of the union communicating projecting from said cylinder body Two of the body connecting pipe body respectively fitted to use boss portion, the upper split body, hydraulic fluid two of the hose connecting tube for connecting to the pair of the hose connected to a reservoir for storing the with the provided respectively, on one or both of the lower split body and the upper split body, a recess for independently forming the hydraulic fluid storage chamber upon welding the two divided members is provided, of the reservoir union body 2 A bridge girder is provided between the two hydraulic fluid storage chambers, a gap is formed on both sides of the central rib of the bridge girder, and the upper half of the pair of partition walls and the lower part of the pair of partition walls form the central rib. A hollow chamber is formed in the central rib by the half portion, and a through hole for extracting air is formed in the lower divided body at the bottom of the hollow chamber .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 5 show a first embodiment of the present invention. A reservoir union 1 includes union connecting bosses 2b and 2b formed on a cylinder body 2a of a master cylinder 2, and a hose ( (Both not shown) are connected to each other, and hydraulic fluid is supplied into the interior of the master cylinder 2 from the reservoir via the hose and the reservoir union 1.
[0011]
The master cylinder 2 is a tandem type that defines two hydraulic chambers (not shown) inside the cylinder body 2a, and supplies hydraulic fluid boosted in these hydraulic chambers individually to the two brake systems. The union coupling bosses 2b, 2b are projected from the front and rear portions of the upper surface, and a plate-like union coupling flange 2c is projected between the union coupling bosses 2b, 2b in parallel with the cylinder shaft. Each of the union coupling bosses 2b, 2b is formed in a cylindrical shape having a fitting hole therein, and the fitting hole and the inside of the cylinder body 2a communicate with each other through a small-diameter communication hole.
[0012]
The reservoir union 1 is formed of a resin, is formed in a horizontally long, oval shape having a vertical width, and has a hollow interior. The reservoir union 1 is provided with body connecting tubes 4 and 4 which are fitted to the union connecting bosses 2b and 2b of the cylinder body 2a so as to protrude downward, and a hose for connecting a hose connected to the reservoir. The connecting pipes 5 and 5 project upward from the positions of the body connecting pipes 4 and 4, and the union connecting flange of the cylinder body 2 a is provided between the body connecting pipes 4 and 4. A body connecting flange 6 that is overlapped with 2c is projected.
[0013]
In the hollow portion formed inside the reservoir union 1, one working fluid perpendicular to the cylinder axis is provided at one intermediate position between the body connecting tube 4 and the hose connecting tube 5 and the body connecting flange 6. The storage chamber partition wall 8 is also provided at the intermediate position between the other body connection tube 4 and hose connection tube 5 and the body connection flange 6, and the other partition wall 8 for the hydraulic fluid storage chamber perpendicular to the cylinder axis. Are provided respectively. As a result, one hydraulic fluid storage chamber 10 that communicates with one body coupling tube 4 and the hose coupling tube 5 by one hydraulic fluid reservoir chamber partition wall 8 and the outer peripheral wall 9 of the reservoir union 1 is provided. The other hydraulic fluid storage chamber 10 communicating with the other body connecting tube 4 and the hose connecting tube 5 is defined by the other hydraulic fluid storage chamber partition wall 8 and the outer peripheral wall 9. The
[0014]
A central rib 12 is provided in the cylinder axial direction of the bridge girder portion 11 provided between one hydraulic fluid storage chamber 10 and the other hydraulic fluid storage chamber 10, and the central rib 12, the outer peripheral wall 9, Two rectangular gaps 13, 13 partitioned by the partition walls 8, 8 for the hydraulic fluid storage chamber are formed penetrating in the vertical direction. A through hole 14 communicating with the hollow chamber 7 is formed at the bottom of the hollow chamber 7 formed inside the central rib 12.
[0015]
The reservoir union 1 of the present embodiment formed as described above has a reservoir union main body 1c formed by welding a resin lower divided body 1a and an upper divided body 1b. The lower half of the reservoir union main body 1c is constituted by 1a, and the upper half of the reservoir union main body 1c is constituted by the upper divided body 1b. Hereinafter, the configuration of the lower divided body 1a and the upper divided body 1b of the reservoir union main body 1c will be described.
[0016]
The lower divided body 1a has an outer peripheral wall lower half portion 9b provided with a first welding flange 9a at the front end thereof around a bottom base portion 1d formed in a horizontally long substantially oval shape. The body connecting pipes 4 and 4 and the body connecting flange 6 project from the lower surface. The intermediate position between one body connecting tube 4 and the body connecting flange 6 and the intermediate position between the other body connecting tube 4 and the body connecting flange 6 are operated by the bottom base portion 1d. Lower half portions 8a and 8a of the liquid storage chamber partition wall 8 project, and the lower half portions 8a and 8a, the outer peripheral wall lower half portion 9b and the bottom base portion 1d define the lower half of the hydraulic fluid storage chambers 10 and 10. The first recesses 10a and 10a are formed. Further, the bottom base portion 1d constituting the bridge girder portion 11 includes the lower half portion 8a of the partition wall 8 for the working fluid storage chamber 8 and the partition wall lower half portions 12a, 12a for forming the gap portions 13, 13 and the central rib 12. The through hole 14 is formed in the bottom base portion 1d that projects perpendicularly to the central rib 12 and that projects perpendicularly.
[0017]
The upper divided body 1b is configured such that an upper half portion 9d of the outer peripheral wall provided with a second welding flange 9c at the tip is suspended around a ceiling base portion 1e formed in a horizontally long substantially oval shape. From the upper surface of 1e, the hose connecting tube 5 projects. At the position corresponding to the lower half portions 8a and 8a of the partition wall 8 for the hydraulic fluid reservoir formed in the lower segment 1a of the upper segment 1b, the partition wall 8 for the hydraulic fluid reservoir is formed from the ceiling base portion 1e. The upper half portions 8b and 8b are vertically provided, and the upper half portions 8b and 8b, the outer peripheral wall upper half portion 9d and the ceiling base portion 1e constitute second concave portions 10b and 10b which constitute the upper half of the hydraulic fluid storage chamber 10. It is formed. The ceiling base part 1e constituting the bridge girder part 11 is formed with gaps 13 and 13 and on the partition wall corresponding to the lower half parts 12a and 12a of the partition wall of the lower divided body 1a. Half parts 12b and 12b are suspended.
[0018]
The lower divided body 1a and the upper divided body 1b described above include the first welding flange 9a and the second welding flange 9b, and the lower half portions 8a and 8a and the upper half portion of the partition walls 8 and 8 for the hydraulic fluid reservoir. Reservoir union main body 1c is formed by welding 8b and 8b, and partition wall upper half portions 12a and 12a and partition wall lower half portions 12b and 12b, respectively. The storage chambers 10, 10, the gap portions 13, 13, the central rib 12, and the hollow chamber 7 are formed.
[0019]
In the reservoir union 1 formed in this way, the body connecting pipes 4 and 4 and the hose connecting pipes 5 and 5 have a relatively small diameter according to the inner diameters of the union connecting bosses 2b and 2b and the hose. Although formed, the hydraulic fluid storage chambers 10 and 10 for storing the hydraulic fluid are formed between the body connecting pipes 4 and 4 and the hose connecting pipes 5 and 5. when such air is discharged in the apparatus is for performing filling of al hydraulic fluid improves the supply of the hydraulic fluid, it is possible to perform the filling operation in a short time.
[0020]
Further, since the reservoir union main body 1c is formed by welding the lower divided body 1a and the upper divided body 1b formed of resin, the reservoir union main body 1c can be manufactured at low cost, and the manufacturing cost can be reduced. Can be achieved. Furthermore, since the bottom base portion 1d constituting the bottom portion of the central rib 12 is provided with a through hole 14, when the lower divided body 1a and the upper divided body 1b are attached together and welded, The internal air can be extracted from the through-hole 14, and the lower divided body 1a and the upper divided body 1b can be welded accurately and easily. Moreover, it can prevent that the bridge girder part 11 becomes thick by providing the space | gap part 13 and 13 in the bridge girder part 11 formed between the hydraulic fluid storage chambers 10 and 10, and the lower part split body 1a. And the upper divided body 1b can be formed to have substantially the same thickness, so that there is no sink when the two divided bodies 1a and 1b are molded with the resin, and the lower divided body 1a and the upper divided body 1b are formed. Can be accurately molded.
[0027]
FIG. 6 shows a second embodiment of the present invention. The reservoir union 30 of this embodiment forms a reservoir union main body 30c by welding a lower divided body 30a and an upper divided body 30b made of resin. A recess for forming the hydraulic fluid storage chamber 31 is formed on the lower divided body 30a side. The lower divided body 30a has a pair of body connecting pipe bodies 32 projecting downward from the bottom base portion 30d, and an outer peripheral wall 33 and a hydraulic fluid storage chamber partition wall projecting upward from the bottom base section 30d. The partition wall, the outer peripheral wall 33, and the bottom base portion 30d form a recess that forms the hydraulic fluid storage chamber 31.
[0028]
The upper divided body 30b is formed by projecting a pair of hose connecting pipes on top of a plate-like ceiling base portion 30e. By welding the ceiling base portion 30e to the lower divided body 30a, a hydraulic fluid storage chamber The upper opening of the recess that forms 31 is covered with the upper divided body 30b, and a hydraulic fluid storage chamber 31 that connects the body connecting tube and the hose connecting tube to the reservoir union main body 30c is formed.
[0029]
FIG. 7 shows a third embodiment of the present invention. The reservoir union 40 of this embodiment forms a reservoir union main body 40c by welding a lower divided body 40a and an upper divided body 40b made of resin. A recess for forming the hydraulic fluid storage chamber 41 is formed on the upper divided body 40a side. The lower divided body 40a has a pair of body connecting pipes 42 projecting below the plate-like bottom base portion 40d.
[0030]
In the upper divided body 40b, a pair of hose connecting pipes project from a plate-like ceiling base portion 40e, an outer peripheral wall 43 is suspended from the periphery of the ceiling base portion 40e, and a partition wall for a working fluid storage chamber is suspended. A recess for forming the hydraulic fluid storage chamber 41 is formed by the partition wall for the hydraulic fluid storage chamber, the outer peripheral wall 43, and the ceiling base portion 40e. When the lower divided body 40a and the upper divided body 40b formed in this way are welded, the lower opening of the concave portion forming the hydraulic fluid storage chamber 41 formed in the upper divided body 40b is covered with the lower divided body 40a. The reservoir union main body 40c is formed with a hydraulic fluid storage chamber 41 that communicates the body connecting tube 42 and the hose connecting tube.
[0031]
The reservoir union of the present invention is not limited to being applied to a tandem type master cylinder as in the above-described embodiments, but can be applied to a single type master cylinder.
[0032]
【The invention's effect】
As described above, according to the present invention, the working fluid storage chamber for storing the working fluid is provided between the body connecting tube of the reservoir union and the hose connecting tube, so that air is discharged. Therefore, when the hydraulic fluid is filled, the replenishability of the hydraulic fluid is improved and the filling operation can be performed in a short time.
[0033]
Moreover, since the reservoir union main body is formed by welding the lower divided body and the upper divided body made of resin, the reservoir union main body can be formed at low cost.
[0034]
In particular, when applied to a tandem master cylinder, a gap is formed in the bridge girder provided between the hydraulic fluid storage chambers of the reservoir union main body, and the bridge girder is hollowed, so that the reservoir is made of resin. When molding the lower divided body and the upper divided body of the union, the thickness of the resin becomes substantially uniform, and there is no risk of sinks, and the lower divided body and the upper divided body can be molded with high accuracy. . Further, by forming a through-hole communicating with the hollow chamber of the bridge girder part in the lower divided body forming the hollow chamber of the bridge girder part, air is passed through the through-hole when the upper divided body and the lower divided body are welded. The upper divided body and the lower divided body can be easily and accurately welded.
[Brief description of the drawings]
FIG. 1 is a plan view of a reservoir union showing a first embodiment of the present invention. FIG. 2 is a sectional view taken along line II-II in FIG. 1. FIG. 3 is a sectional view taken along line III-III in FIG. FIG. 5 is a perspective view showing a state in which the reservoir union showing the first embodiment of the present invention is attached to the master cylinder. FIG. 6 is a cross-sectional side view of the main part of the reservoir union showing the second embodiment of the present invention. FIG. 7 is a cross-sectional side view of an essential part of a reservoir union showing a third embodiment of the present invention . 1,30,40 ... reservoir union, 1a, 30a, 40a ... lower divided body, 1b, 30b, 40b ... upper divided Body, 1c, 30c, 40c ... reservoir union body, 1d, 30d, 40d ... bottom base part, 1e, 30e, 40e ... ceiling base part, 2 ... master cylinder, 2b ... union connecting boss part, 4, 32, 42 ... Body connection Pipe body, 5 ... hose connection pipe body, 6 ... body connection flange, 7 ... hollow chamber, 8 ... partition wall for hydraulic fluid storage chamber, 8a ... lower half portion, 8b ... upper half portion, 9 ... outer peripheral wall, DESCRIPTION OF SYMBOLS 10, 31, 41 ... Hydraulic fluid storage chamber, 10a ... 1st recessed part, 10b ... 2nd recessed part, 11 ... Bridge girder part, 12 ... Center rib, 13 ... Gap part, 14 ... Through-hole

Claims (1)

リザーバユニオン本体の下側に、マスタシリンダのシリンダボディ上面から突出するユニオン連結用ボス部に嵌着するボディ連結用管体を突設し、前記リザーバユニオン本体の上側に、作動液を貯留するリザーバに接続したホースに連結するホース連結用管体を突設し、前記リザーバに貯留された作動液を前記マスタシリンダに供給する車両用液圧マスタシリンダのリザーバユニオンにおいて、前記リザーバユニオン本体を、樹脂製の下側分割体と樹脂製の上側分割体とを溶着して、前記ボディ連結用管体と前記ホース連結用管体とが連通する２つの作動液貯留室を、前記リザーバユニオン本体内に互いに独立して形成し、前記下側分割体には、前記シリンダボディから突出する一対の前記ユニオン連結用ボス部にそれぞれ嵌着する２つの前記ボディ連結用管体を、前記上側分割体には、作動液を貯留するリザーバに接続した一対の前記ホースにそれぞれ連結する２つの前記ホース連結用管体をそれぞれ備えるとともに、前記下側分割体と上側分割体のいずれか一方または双方に、前記両分割体を溶着した際に前記作動液貯留室を独立形成する凹部を設け、前記リザーバユニオン本体の２つの作動液貯留室間に橋桁部を設け、該橋桁部の中央リブの両側に肉抜き用の空隙部を形成し、前記中央リブを形成する一対の仕切壁上半部と一対の仕切壁下半部とによって前記中央リブに中空室を形成し、該中空室の底部に空気を抜き出す貫通孔を前記下側分割体に形成したことを特徴とする車両用液圧マスタシリンダのリザーバユニオン。A reservoir for storing a working fluid is provided above the reservoir union main body, with a body connecting tube projecting on the union connecting boss projecting from the upper surface of the cylinder body of the master cylinder. In a reservoir union of a hydraulic master cylinder for a vehicle that protrudes a hose coupling tube to be coupled to a hose connected to the master cylinder and supplies hydraulic fluid stored in the reservoir to the master cylinder, the reservoir union main body is made of resin. The lower divided body made of resin and the upper divided body made of resin are welded, and two hydraulic fluid storage chambers in which the body connecting pipe body and the hose connecting pipe body communicate with each other are formed in the reservoir union main body. independently form one another, wherein the lower split body, before the two which fits the respective boss for a pair of the union coupling projecting from said cylinder body A body connecting pipe body, wherein the upper split body, two of said hose connection pipe body for connecting to the pair of the hose connected to a reservoir for storing the hydraulic fluid together comprising each said lower split body One or both of the upper divided bodies are provided with a recess that independently forms the hydraulic fluid storage chamber when the two divided bodies are welded, and a bridge girder is provided between the two hydraulic fluid storage chambers of the reservoir union body. A hollow space is formed on both sides of the central rib of the bridge girder, and a hollow chamber is formed in the central rib by a pair of partition wall upper half and a pair of partition wall lower half forming the center rib. A reservoir union for a hydraulic master cylinder for a vehicle, characterized in that a through-hole is formed in the lower divided body to extract air from the bottom of the hollow chamber .
JP2003034604A 2003-02-13 2003-02-13 Reservoir union of hydraulic master cylinder for vehicles Expired - Fee Related JP4043969B2 (en)

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JP2003034604A JP4043969B2 (en) 2003-02-13 2003-02-13 Reservoir union of hydraulic master cylinder for vehicles
EP04003139A EP1447294B1 (en) 2003-02-13 2004-02-12 Reservoir union for a hydraulic master cylinder of a vehicle
DE200460024346 DE602004024346D1 (en) 2003-02-13 2004-02-12 Hydraulic tank for a master cylinder of a vehicle
AU2004200569A AU2004200569B2 (en) 2003-02-13 2004-02-13 Reservoir Union for a Hydraulic Master Cylinder of a Vehicle

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AU2004200569A1 (en) 2004-09-02
EP1447294B1 (en) 2009-12-02
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EP1447294A1 (en) 2004-08-18
AU2004200569B2 (en) 2011-03-17

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